Ore-concentrator.



No. 702,54l. Patented lune I7, I902. I L. com-:u & .1. amass. w

ORE fiUNGENTRATOR.

(Application filed. Sept. 11.1901.)

(No Model.)

"rm: uu-ws PETERS co. wnmaun on wnsmucmm n, c

UNITED STATES- g PATENT OFFICE.

LOUIS COHEN AND JOHN GROSS, OF SOMBRERETE, MEXICO.

ORE-COJNCTENTRATOR.

" -Aiaplioationiiled September 11,1901. Serial No. 751097. (No model.)

. To all whom/it may concern: 7

Be it known that we,LoUIs COHEN and J OH GROSS, citizens of the United States, residing at Sombrerete, Zacatecas, Mexico, have invented an Improvement in Ore-Concentrators; and we hereby declare the following to be a full, clear, and exact description of the same.

Our invention relates to improvements in ore-concentrating tables.

, It consists, essentially, of two endless traveling surfaces or belts one within the other, the inner one serving as a support for the outer or concentrator belt,'-flexible bed-sections upon which these. belts are carried and by which the belts are given a double incline, an?1 means whereby these inclines'may bevar1e It also comprises details which will be more fully set forth. hereinafter.

Having reference to the accompanying drawings, Figure l'is' a longitudinal-elevation of ourinvention. Fig. 2 isa similar view with the supporting-frame omitted. Fig. 3 is a part transverse section on the line m a, Fig. 1, and part end view. Fig. 4 is an enlarged transverse section view showing a sheave.

A representsa suitable framework having its upper longitudinal portion'or bed made in two sections a and a, which are movablein relation to each other. The lower endof the longer section apivots upon the shaft of a roller 2. The upper end of the 1S60i7l0l1 a pivots upon the shaft of the roller 4, while.

the two sections are movably connectedto the shaft of the roller'3. An endless surface or belt 5 passes over these rollers and over a roller 6. This belt may be of any suitable heavy texture, as burlap, and itis intended as a support and carriagerfor the concentratorbelt 7, which incloses it. The belt 7 is of suitable textile fabric, as canvas, and is provided'vwith'a marginal border or flange, as 8, which serves both as a guide to run in the grooves of the sheaves 9, carried upon the frame, and also toprevent slimes and water from flowing over thesides ofthe table. This outer belt lies upon the belt 5 and passes down into the concentrate'box or tank 10 and around a roller 11. The tension of the belt 7-is regulated by a roller 12, whose journals rest upon an adjusting spring andscrew 13. The adjustment of the roller 6 is efiected by similar means. The supporting-belt 5 is in turn supported by a number of rollers 14, carried upon the sectionsand placed sufficiently close together to keepthe surface taut. imparted to the belts through the power-pulley 15 upon the shaft of the roller 4. This, in fact, is the only motion given to the table.

Between the rollers and 3 and between 3 and 4 the table is given two separate longitudinal inclinations; This is accomplished by means of the pivoted sections'a and a and van'adjusting mechanism 16,located in relation to the rollers 2and 3. As here shown, this adjusting means'consists of a pair of screws each. supported in'the frameA and operated by a hand-wheel and having their lower ends adapted to receive the shafts of the rollers; Thus it' is'possible to give any desired inclination or pitch to either one or the other, or both, of the sections and accordingly to their respective concentrating surfaces. This pitch, however, is always upward in the direction of travel and toward the head ofthe machine.

In operation the ore and slimes are fed onto the table at'17. The tailings or gangue passing downward with the flow of water and discharging at the lower end of the machine,

while the concentrates or more valuable par- Lticles are carried on upward over the steeper incline-and are discharged into the tank 10. Fresh wateris fed on the table by suitable 'rneans', as a perforated pipe 18, near the head of the table, and this serves to wash thor- "oughly the concentrates and remove any remaining foreign matter. The double inclination of the table, as indicated by the position of the sections a and a tends to give a clean and thorough separation of the concentrates and gangue. Moreover, thetable is easily adjustable to meet the varying conditions of treatment that may arise between different runs of ore. H

The device is extremely simple inconstruction and operation. As a result less repairs are needed than with most tables having more Motion is 7 than one motion, and there is a marked saving of time and material over the ordinary type of machine.

Having thus described our invention, what We claim, and desire to secure by Letters Patent, is-- 1. The combination in an ore-concentrator of a plurality of bed-sections and a single axis passing through the meeting ends of said sections and conjoining the sections whereby the pitch and inclination of the sections may be simultaneously varied, rollers upon the sections, endless concentrating surfaces supported upon said rollers and extending continuously over the bed-sections, and means for-simultaneously moving the conjoined ends of the sections and varying the inclination of the sections in relation to each other.

2. The combination in an ore-concentrator, of a plurality of conjoined bed-sections, rollers upon these sections, a belt passing over said rollers and conforming to the pitch or inclination of said sections, a second belt lying upon and inclosing said first-named belt, and means whereby the pitch or inclination of said sections may be varied.

3. In an ore-concentrator, the combination of a plurality of alined bed-sections having rollers said sections having their meeting ends directlyconjoined; a plurality of endless traveling belts, one Within and supporting the other said belts passing over said bed-sections; and means whereby said belts and bedsections may be moved in a vertical plane and a double inclination be given the continuous face of the concentrating surface.

4. In an ore-concentrator, the combination of two alined bed-sections having their adjacent ends pivotally connected, pivotal supports for their outer ends, one of said sections longer than the other, a traveling belt adapted to be supported upon and inclosed by said sections, and a second or concentrator belt supported upon and inclosing said first-named belt.

5. A concentrator consisting in combination of two horizontally-disposed bed-sections having their ends pivotally supported, means by which said sections may be moved so as to change their relative angles of inclination, rollers upon said sections, an endless belt supported upon said rollers and having its upper surface conforming to the inclination of said sections, a second belt supported upon and inclosing said first-named belt, means by which said belts are driven in unison, lateral guidesvupon the outer belt and sheaves having grooves in which said guides are adapted to travel.

In witness whereof we have hereunto set our hands.

LOUIS COHEN. JOHN GROSS. 'Witnesses:

FRANK P. SAF'FORD, F. J. BOYD. 

